All-New SnowCheck-Exclusive 850 Patriot™ Engine

Introducing the all-new Polaris® 850 Patriot™, designed for class-leading durability, responsiveness, unrivaled acceleration and industry's best power-to-weight. The most powerful snowmobile engine ever built by Polaris®. This engine is available exclusively on select SnowCheck models, and built with pride in the USA.

( / )

Key Features

DESIGNED FOR DURABILITY & POWER

World-class durability with class-leading power and Polaris' renowned responsiveness.

Real-world performance and reliability based on 25 years of Liberty® engine experience

Guaranteed quality with standard 4-year warranty

NEW PISTON

Optimized for reliability and durability.

+8mm compression height

+3mm thicker dome

More contact area with cylinder bore to improve heat transfer

PVD-coated steel single-ring design

High-capacity wrist pin

NEW LIGHTWEIGHT CRANKSHAFT

All-new design is strong and stiff while maintaining low inertia.

Larger clutch taper design for durability and serviceability

High capacity bearing and pin design

Separate crankpins feature high grade steel

Symmetrical press fit webs for improved straightness

NEW CYLINDER & CYLINDER HEAD

All-new design optimized for maximum durability.

Advanced Cooling System based on Computational Fluid Dynamics which results in consistent flow velocities